وَمَا أَنْتَ بِمُؤْمِنٍ لَنَا
“And you will not believe us.” (Yūsuf 12:17)
Here bi-muʾminin lanā means accepting the brothers' report as true. The usage supports the lexical sense of īmān as assent to a report.
In a religious context, the object of that assent must also be identified: what the Messenger ﷺ brought from Allah. Accepting the truth of an unrelated statement is not, in itself, the technical meaning of religious faith.
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The Nature of Faith: Inward Assent, Verbal Profession, and Actions
وَمَا أَنْتَ بِمُؤْمِنٍ لَنَا
“And you will not believe us.” (Yūsuf 12:17)
Here bi-muʾminin lanā means accepting the brothers' report as true. The usage supports the lexical sense of īmān as assent to a report.
In a religious context, the object of that assent must also be identified: what the Messenger ﷺ brought from Allah. Accepting the truth of an unrelated statement is not, in itself, the technical meaning of religious faith.